x11, wayland: do not accidentally close FD 0

Both backends have code to close each FD of their wakeup_pipe array.
This array is default-initialized with 0, which means if the backends
exit before the wakeup pipe is created (e.g. when probing), they would
close FD 0.

Initialize the FDs with -1. Then we call close(-1) in these situations,
which is perfectly allowed and has no bad consequences.

1 files changed, 1 insertions, 0 deletions

diff --git a/video/out/x11_common.c b/video/out/x11_common.c
index 2f35b6a4b8..b0082086bb 100644
--- a/video/out/x11_common.c
+++ b/video/out/x11_common.c
@@ -543,6 +543,7 @@ int vo_x11_init(struct vo *vo)
         .input_ctx = vo->input_ctx,
         .screensaver_enabled = true,
         .xrandr_event = -1,
+        .wakeup_pipe = {-1, -1},
     };
     vo->x11 = x11;